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2 years ago

If A : B = 4 : 5 and B : C = 3 : 2, find A : B : C.

Mathematics

1 answer:

Sindrei [870]2 years ago

6 0

Answer:

12 : 15 : 10

Step-by-step explanation:

Let A = 4x, the B = 5x

Let B = 3y, then C = 2y

B = 5x = 3y, so y = (5/3)x

Let x = 3t, so y = 5t

Then A = 4x = 4(3t) = 12t

B = 5x = 5(3t) = 15t

C = 2y = 2(5t) = 10t

so A : B : C = 12t : 15t : 10t = 12 : 15 : 10

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3 years ago

Solving a right triangle ‼️ Can someone help me find A,a and c❓ (Round to the nearest tenth)

denis23 [38]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the given angles from 180 for A

A = 180° - (90 + 48)° = 180° - 138° = 42°

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tan48° = $\frac{opposite}{adjacent}$ = $\frac{18}{a}$

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2 years ago

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Step-by-step explanation:

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